Ocular anesthetics

Definition

Ocular anesthetics are medications used to temporarily numb the eye's surface to prevent pain during procedures. They are commonly administered as eye drops.

5 Must Know Facts For Your Next Test

1. Ocular anesthetics work by blocking sodium channels, which inhibits nerve impulse transmission.
2. These anesthetics are typically used for procedures like tonometry, removal of foreign bodies, and minor surgeries.
3. Proparacaine and tetracaine are two commonly used ocular anesthetics in clinical practice.
4. The effects of ocular anesthetics usually last between 10 to 20 minutes depending on the specific drug used.
5. Overuse of ocular anesthetics can lead to corneal damage and potential long-term vision problems.

Review Questions

• What is the primary mechanism by which ocular anesthetics provide pain relief?
• Name two common ocular anesthetics used in medical practice.
• What are some potential risks associated with the overuse of ocular anesthetics?

Related terms

Tonometry:

A procedure that measures intraocular pressure.

Proparacaine:

A commonly used local anesthetic in ophthalmology.

Tetracaine:

A potent local anesthetic often used for short-duration ophthalmic procedures.